Submitter | Variables | Constraints | Density | Status | Group | Objective | MPS File |
---|---|---|---|---|---|---|---|

T. Koch | 5174 | 42680 | 4.67295e-04 | easy | momentum | 109143.4935 | momentum1.mps.gz |

Snapshot based UMTS planning problem, having a very wide dynamic range in the matrix coefficients and tending to be numerically unstable. Solved with Gurobi 4.5.1 on a 12-core Linux system in 3590.41 sec.

Imported from MIPLIB2010.

Detailed explanation of the following tables can be found here.

Original | Presolved | |
---|---|---|

Variables | 5174 | 3813 |

Constraints | 42680 | 26489 |

Binaries | 2349 | 1664 |

Integers | 0 | 0 |

Continuous | 2825 | 2149 |

Implicit Integers | 0 | 0 |

Fixed Variables | 0 | 0 |

Nonzero Density | 0.000467295 | 0.000658617 |

Nonzeroes | 103191 | 66522 |

Original | Presolved | |
---|---|---|

Total | 42680 | 26489 |

Empty | 0 | 0 |

Free | 0 | 0 |

Singleton | 52 | 0 |

Aggregations | 6 | 10 |

Precedence | 2445 | 1543 |

Variable Bound | 33111 | 20198 |

Set Partitioning | 92 | 85 |

Set Packing | 0 | 0 |

Set Covering | 0 | 0 |

Cardinality | 0 | 0 |

Invariant Knapsack | 38 | 0 |

Equation Knapsack | 0 | 0 |

Bin Packing | 0 | 0 |

Knapsack | 0 | 0 |

Integer Knapsack | 0 | 0 |

Mixed Binary | 6936 | 4653 |

General Linear | 0 | 0 |

Indicator | 0 | 0 |

Available nonzero structure and decomposition information. Further information can be found here.

Decomposed structure of original problem (dec-file)

Decomposed structure after trivial presolving (dec-file)

value | min | median | mean | max | |
---|---|---|---|---|---|

Components | 0.698970 | ||||

Constraint % | 0.0037800 | 20.6086 | 0.0132130 | 82.4040 | |

Variable % | 0.0521921 | 23.9040 | 0.0782881 | 95.4071 | |

Score | 0.038149 |

Find solutions below. Download the archive containing all solutions from the Download page.

ID | Objective | Exact | Int. Viol | Cons. Viol | Obj. Viol | Submitter | Date | Description |
---|---|---|---|---|---|---|---|---|

1 | 109143.5 | 109143.5 | 0 | 8e-07 | 0 | - | 2018-10-11 | Solution found during MIPLIB2017 problem selection. |

2 | 109143.5 | 109143.5 | 0 | 1e-06 | 0 | - | 2018-10-11 | Solution imported from MIPLIB2010. |

The following instances are most similar to momentum1 in the collection. This similarity analysis is based on 100 scaled instance features describing properties of the variables, objective function, bounds, constraints, and right hand sides.

```
@techreport{MOMENTUM-D43,
author = {A. {Eisenbl\"atter} and A. {F\"ugenschuh} and E.R. Fledderus and H.-F. Geerdes and B. Heideck and D. Junglas and T. Koch and T. {K\"urner} and A. Martin},
editor = {A. Martin},
instance = {momentum1,momentum2,momentum3},
institution = {IST-2000-28088 MOMENTUM},
language = {English},
number = {D4.3},
title = {Mathematical Methods for Automatic Optimization of {UMTS} Radio Networks},
year = {2003}
}
```

Last Update Nov 16, 2020 by Philipp Wellner

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